KR102299494B1 - Apparatus for controlling window of vehicle and method thereof - Google Patents

Abstract

The present invention relates to a vehicle window control apparatus and method, comprising: a driving motor for driving a window glass; a first sensor for generating one pulse signal corresponding to the rotation of the driving motor; a second sensor sensing a voltage signal applied to the driving motor; and a controller configured to perform a safety function based on one pulse signal generated by the first sensor and a voltage signal sensed by the second sensor.

Description

Window control device and method for vehicle

The present invention relates to an apparatus and method for controlling a window of a vehicle, and more particularly, when a failure occurs in one of two hall sensors in a power window system, safety ( safety) relates to the technology that enables the function to be performed.

In general, a power window system mounted on a vehicle includes a switch and a driving motor, and when a driver's manipulation is input through the switch, the driving motor raises or lowers a window glass of the vehicle according to the driver's manipulation. control Accordingly, the driver can easily open and close the window glass of the vehicle to a desired position by simply operating the switch.

On the other hand, when the driver closes the window glass of the rear seat by using a switch in the vehicle, a human body part or object such as a finger, arm, head, neck, etc. of a person occupant in the rear seat is caught between the window glass and the door frame of the vehicle is occurring often.

Accordingly, when an obstacle is detected while the window glass is ascending, a power window system having a safety function that can protect the obstacle by automatically stopping the ascent of the window glass or lowering it in reverse has been developed.

This power window system includes a ring magnet fixed to the rotation shaft of the driving motor, and includes two hall sensors having a phase difference of 90 degrees from each other around the ring magnet, and is detected by the two hall sensors The safety function is performed after determining the speed (up/down speed), position and direction (rise, fall) of the window glass based on the two pulse signals.

At this time, if a failure occurs in one of the two Hall sensors, since only one pulse signal is generated, the moving direction of the window glass cannot be detected and thus the safety function cannot be performed. There is a problem that the system cannot cope with this situation.

That is, in the conventional power window system, when one Hall sensor among the two Hall sensors fails, the speed of the window glass can be detected based on one pulse signal generated by one Hall sensor, but the position There is a problem in that the safety function cannot be performed because the direction and direction cannot be detected.

US Patent Publication No. 7,830,107

In order to solve the problems of the prior art as described above, the present invention performs a safety function based on a pulse signal generated by one Hall sensor and a voltage signal applied to a driving motor, so that one of the two Hall sensors is An object of the present invention is to provide a vehicle window control device and method capable of normally performing a safety function even when a sensor malfunction occurs.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned can be understood by the following description, and will be more clearly understood by the examples of the present invention. Moreover, it will be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

An apparatus of the present invention for achieving the above object, in the window control apparatus of a vehicle, a drive motor for driving the window glass; a first sensor for generating one pulse signal corresponding to the rotation of the driving motor; a second sensor sensing a voltage signal applied to the driving motor; and a controller configured to perform a safety function based on one pulse signal generated by the first sensor and a voltage signal sensed by the second sensor.

Here, the controller detects the direction of the window glass by determining whether the voltage signal applied to the driving motor is a voltage signal for forward rotation or a voltage signal for reverse rotation, and calculates the speed of the window glass using one pulse signal, The current position of the window glass is stored, and the real-time position of the window glass is detected based on the speed of the window glass and the direction of the window glass.

In addition, the controller performs the safety function by determining that an obstacle is caught when the rising speed of the window glass is less than a threshold value while the window glass is rising. At this time, the safety function means lowering the rising window glass.

In addition, when the safety function is performed, the controller monitors whether the driving motor lowers the rising window glass, and performs the safety function again if the rising window glass is not falling.

The method of the present invention for achieving the above object, in the window control method of a vehicle, the first sensor generating a single pulse signal corresponding to the rotation of the drive motor for driving the window glass; detecting, by a second sensor, a voltage signal applied to the driving motor; and performing, by a controller, a safety function based on the generated one pulse signal and the sensed voltage signal.

Here, performing the safety function may include: detecting the direction of the window glass by determining whether the voltage signal applied to the driving motor is a forward rotation voltage signal or a reverse rotation voltage signal; calculating the speed of the window glass using the single pulse signal; detecting a real-time position of the window glass based on the speed of the window glass and the direction of the window glass; And when the rising speed of the window glass is lower than a threshold value while the window glass is rising, it is determined that an obstacle is caught and performing the safety function. At this time, the safety function means lowering the rising window glass.

In addition, the step of performing the safety function may further include the step of monitoring the driving motor by the controller whether the driving motor lowers the rising window glass when the safety function is performed. At this time, if the rising window glass is not falling, the controller may perform the safety function again.

Another device of the present invention for achieving the above object is a window control device for a vehicle, comprising: a driving motor for driving a window glass; a first Hall sensor generating a first pulse signal corresponding to the rotation of the driving motor; a second Hall sensor generating a second pulse signal corresponding to the rotation of the driving motor; a voltage sensor sensing a voltage signal applied to the driving motor; and a controller configured to perform a safety function based on any one of a first pulse signal generated by the first Hall sensor and a second pulse signal generated by the second Hall sensor and a voltage signal sensed by the voltage sensor. includes

Here, when a failure occurs in the first Hall sensor, the controller may perform a safety function based on the second pulse signal generated by the second Hall sensor and the voltage signal sensed by the voltage sensor.

In addition, the controller detects the direction of the window glass by determining whether the voltage signal applied to the driving motor is a forward rotation voltage signal or a reverse rotation voltage signal, and calculates the speed of the window glass using the second pulse signal, , since the current position of the window glass is stored, the real-time position of the window glass can be detected based on the speed of the window glass and the direction of the window glass.

Then, when the rising speed of the window glass is less than a threshold value while the window glass is rising, the controller determines that an obstacle is caught and controls the driving motor to lower the rising window glass.

In addition, when the safety function is performed, the controller may monitor whether the driving motor lowers the rising window glass and perform the safety function again if the rising window glass is not falling.

The present invention as described above performs a safety function based on a pulse signal generated by one Hall sensor and a voltage signal applied to the driving motor, so that even when one Hall sensor among the two Hall sensors fails, it is normally It has the effect of performing a safety function.

In addition, the present invention has an effect that can determine whether the movement direction of the detected window glass is normal when both Hall sensors are normal, based on the voltage signal applied to the driving motor.

1 is a configuration diagram of an embodiment of a window control apparatus for a vehicle according to the present invention;
2 is an explanatory diagram of one embodiment of a safety function used in the present invention;
3 is an exemplary view of the structure of the first sensor used in the present invention;
4 is an exemplary view showing two pulse signals output from the first sensor used in the present invention;
5 is a flowchart illustrating a window control method of a vehicle according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the component from other components, and the essence, order, or order of the component is not limited by the term. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, in the present invention, the speed of the window glass means the speed when the window glass is opened or closed, the direction of the window glass is the direction in which the window glass moves and means the opening and closing of the window glass, and the position of the window glass is the window glass. indicates the degree of openness of

1 is a configuration diagram of an apparatus for controlling a window of a vehicle according to an embodiment of the present invention.

As shown in FIG. 1 , the vehicle window control apparatus 100 according to the present invention includes a switch 10 , a first sensor 20 , a second sensor 30 , a driving motor 40 , and a controller ( 50).

Looking at each of the components, first, the switch 10 generates an operation signal instructing the rising, falling, and stopping of the window glass according to the user's manipulation. At this time, the user (driver, occupant) operates the switch 10 to open or close the window glass.

In the operation mode of the switch 10, an auto operation mode in which the window glass is completely opened and closed by one operation of pressing or pulling the switch 10, and the window glass only while the switch 10 is continuously pulled or pressed There is a manual operation mode that opens and closes. Accordingly, the switch 10 generates an operation signal according to the auto operation mode or a operation signal according to the manual operation mode according to the user's operation, respectively.

Next, the first sensor 20 is a module including two Hall sensors and one ring magnet, and generates two pulse signals corresponding to the rotation of the driving motor 40 . At this time, the two generated pulse signals have a phase difference of 90 degrees from each other.

In addition, the first sensor 20 generates only one pulse signal when a failure occurs in any one of the two Hall sensors. At this time, the generated pulse signal is a pulse signal generated by the Hall sensor in which a failure does not occur.

Next, the second sensor 30 may be implemented as, for example, a voltage sensor, and senses a voltage (voltage signal) applied to the driving motor 40 . That is, the second sensor 30 measures a driving voltage signal applied to the driving motor 40 . In this case, the voltage signal may be implemented as a PWM (Pulse Width Modulation) signal.

Next, the driving motor 40 is controlled by the control signal of the controller 50 to open or close the window glass through forward rotation and reverse rotation. At this time, the control signal for controlling the driving motor 40 is a control signal corresponding to the operation signal from the switch 10 during normal operation, and when it is determined that an obstacle is caught by the controller 50, a safety function is performed. control signal.

Next, the controller 50 performs overall control so that each of the components can perform their functions normally.

In addition, the controller 50 controls the driving motor 40 based on the operation signal input through the switch 10 during normal operation, and when it is determined that an obstacle is caught, the driving motor 40 operates the driving motor 40 to perform a safety function. Control.

In addition, when two pulse signals are output from the first sensor 20 during the operation of the driving motor 40 , the controller 50 determines that the two Hall sensors included in the first sensor 20 are normal, A safety function is performed based on two pulse signals. At this time, the technique of calculating the speed, position, and direction of the window glass using two pulse signals is a general technique and any method may be used.

In addition, when one pulse signal is output from the first sensor 20 while the driving motor 40 is operating, the controller 50 has a failure in one of the two Hall sensors included in the first sensor 20 . judged to have occurred. In this case, the controller 50 performs a safety function based on one pulse signal output from the first sensor 20 and a voltage signal output from the second sensor 30 .

Hereinafter, a process in which the controller 50 performs a safety function based on one pulse signal and a voltage signal will be described.

First, the controller 50 detects the direction (moving direction) of the window glass based on the voltage signal output from the second sensor 30 . For example, the controller 50 may detect the direction of the window glass by determining whether the voltage signal applied to the driving motor 40 is a forward rotation voltage signal or a reverse rotation voltage signal. In more detail, when the driving voltage input to the first terminal of the driving motor 40 is a positive (+) voltage and the driving voltage input to the second terminal of the driving motor 40 is a negative (-) voltage, the window glass rises. If the driving voltage input to the first terminal is a negative (-) voltage and the driving voltage input to the second terminal is a positive (+) voltage, it is determined that the window glass is falling. As another example, if the driving voltage input to the first terminal is a positive (+) voltage and the driving voltage input to the second terminal is a negative (-) voltage, it is determined that the window glass is falling, and the driving voltage input to the first terminal If this is a negative (-) voltage and the voltage input to the second terminal is a positive (+) voltage, it may be determined that the window glass rises.

Thereafter, the controller 50 may detect the position of the window glass based on the detected speed of the window glass and the detected direction of the window glass using one pulse signal. At this time, the speed of the window glass can be calculated by counting the pulse signal, and if the calculated speed and direction of the window glass are known, the real-time position of the window glass can be calculated. At this time, since the current position of the window glass is always stored in a memory (not shown) inside the controller 50, the initial position of the window glass can be known even when the window glass is manipulated thereafter.

In this way, the controller 50 can detect the speed, position, and direction of the window glass based on one pulse signal generated by the first sensor 20 and the voltage signal detected by the second sensor 30 . Therefore, even if one of the two Hall sensors fails, the safety function can be performed normally.

Hereinafter, the safety function will be described with reference to FIG. 2 .

The safety function means a function that automatically stops or lowers the window glass when an obstacle is detected while the window glass is ascending.

As shown in FIG. 2 , there may be three regions depending on the position of the window glass. Regions A and C are regions in which the safety function is deactivated, and region B is an region in which the safety function is activated. That is, the safety function is performed only in area B.

If an obstacle is detected while the window glass is rising in area B, the safety function is activated. In this case, the B area may be appropriately adjusted in consideration of various situations such as the size of the window glass and the rising/falling speed, and an area of 4 mm to 200 mm from the top of the window is usually set as the B area.

Since area A and area C are areas in which the safety function is deactivated, even if an obstacle is detected while the window glass is ascending, the window glass does not stop or descend, and the movement of the window glass is controlled according to the user's switch operation.

On the other hand, the controller 50 stops or lowers the window glass by determining that an obstacle is caught when the rising speed of the window glass is below the threshold value during the window glass rising.

In addition, the controller 50 monitors whether the driving motor 40 normally stops or lowers the window glass, and if it does not normally stop or lower the window glass, a control signal for safety may be transmitted to the driving motor 40 again. . That is, if the safety function is not normally performed, the controller 50 may perform the safety function again.

3 is an exemplary diagram of a structure of a first sensor used in the present invention.

As shown in FIG. 3 , the first sensor 20 used in the present invention may include one ring magnet 360 and two Hall sensors 310 and 320 .

Since the ring magnet 360 is fixed to the rotation shaft 340 of the driving motor 40 and installed, as the driving motor 40 rotates, the ring magnet 360 also rotates. Two Hall sensors 310 and 320 installed around the ring magnet 360 detect a change in a magnetic field generated as the ring magnet 360 rotates, and a pulse signal corresponding to the rotation of the ring magnet 360 create At this time, since the window glass is also moved by the rotation of the driving motor 40, the pulse signal is a signal corresponding to the movement of the window glass.

Here, each of the Hall sensors 310 and 320 may be installed with an arbitrary angle difference. For example, in FIG. 3 , since the two Hall sensors 310 and 320 are installed at a position of a 90 degree angle, two pulse signals having a phase difference of 90 degrees from each other are generated. The two pulse signals thus generated are used by the controller 50 to calculate the speed, position, and direction of the window glass.

At this time, when a failure occurs in one of the two Hall sensors 310 and 320 , only the non-failing Hall sensor generates a pulse signal because the failed Hall sensor cannot generate a pulse signal. As a result, the first sensor 20 may output only one pulse signal.

In this case, the present invention can detect the direction of the window glass based on one pulse signal output from the first sensor 30 and the voltage signal sensed by the second sensor 30, and the one pulse signal The position of the window glass may be detected based on the detected speed of the window glass and the detected direction of the window glass. As a result, the speed, position, and direction of the window glass can be detected, so that the safety function can be performed normally.

4 is an exemplary view showing two pulse signals output from the first sensor used in the present invention.

In FIG. 4 , the horizontal axis represents time, and the vertical axis represents the magnitude (voltage) of the pulse signal. At this time, a phase difference of 90 degrees occurs between the first pulse signal generated by the Hall sensor 310 and the second pulse signal generated by the Hall sensor 320 due to a change in the magnetic field according to the rotation of the ring magnet 360 . can be known

The state in which the period (interval) of the initial pulse signal is constant means that the window glass is normally opened or closed, and the portion 410 where the period of the pulse signal is longer is the window glass rising speed because an obstacle is caught while the window glass is rising means slow. That is, if an obstacle is caught while the window glass is ascending, the driving motor 40 receives a load, thereby increasing the period of the pulse signal.

When the period of the pulse signal of the hall sensor 310 or the pulse signal of the hall sensor 320 suddenly becomes longer while the window glass is rising in the region B, the controller 50 determines that an obstacle is caught and performs a safety function.

In FIG. 4 , when a failure occurs in one Hall sensor 310 among the two Hall sensors 310 and 320 , the Hall sensor 310 in which the failure occurs does not generate a pulse signal, and only the other Hall sensors 320 do not generate a pulse signal. Generates a pulse signal. In this case, the number of pulse signals output from the first sensor 20 is one. That is, the first sensor 20 generates one pulse signal.

5 is a flowchart illustrating a window control method of a vehicle according to an embodiment of the present invention.

First, the first sensor 20 generates one pulse signal corresponding to the rotation of the driving motor 40 for driving the window glass ( 501 ). At this time, when a failure occurs in any one of the two Hall sensors 310 and 320 included in the first sensor 20, a single pulse signal is generated. Also, when the first sensor 20 generates one pulse signal, the controller 50 may determine that a failure has occurred in one Hall sensor and activate the second sensor 30 .

Thereafter, the second sensor 30 detects a voltage signal applied to the driving motor 40 ( 502 ).

Thereafter, the controller 50 performs a safety function based on one pulse signal generated by the first sensor 20 and a voltage signal sensed by the second sensor 30 ( S503 ).

The present invention relates to a technology for detecting the speed, position, and direction of a window glass necessary to perform a safety function, and since the technology for performing a safety function after such information is detected is a general technology, the detailed description thereof will be omitted. do.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10 : switch
20: first sensor
30: second sensor
40: drive motor
50: controller

Claims (20)

delete delete delete delete delete delete delete delete delete delete delete delete delete a driving motor for driving the window glass;
a first Hall sensor generating a first pulse signal corresponding to the rotation of the driving motor;
a second Hall sensor generating a second pulse signal corresponding to the rotation of the driving motor;
a voltage sensor sensing a voltage signal applied to the driving motor; and
a controller for performing a safety function based on any one of a first pulse signal generated by the first Hall sensor and a second pulse signal generated by the second Hall sensor and a voltage signal sensed by the voltage sensor; including,
The controller is
When a failure occurs in the first Hall sensor, a safety function is performed based on a second pulse signal generated by the second Hall sensor and a voltage signal detected by the voltage sensor. Device. delete 15. The method of claim 14,
The controller is
Window control device for a vehicle, characterized in that for detecting the direction of the window glass by determining whether the voltage signal applied to the driving motor is a voltage signal for forward rotation or a voltage signal for reverse rotation. 17. The method of claim 16,
The controller is
A window control apparatus for a vehicle, characterized in that the speed of the window glass is calculated by using the second pulse signal. 18. The method of claim 17,
The controller is
The current position of the window glass is stored, and the window control device for a vehicle, characterized in that the real-time position of the window glass is detected based on the speed of the window glass and the direction of the window glass. 19. The method of claim 18,
The controller is
When the rising speed of the window glass is below a threshold value while the window glass is rising, it is determined that an obstacle is caught and the rising window glass is lowered. 20. The method of claim 19,
The controller is
When the safety function is performed, the driving motor monitors whether the rising window glass is lowered, and if the rising window glass is not falling, the safety function is performed again.

Images